Macrocyclic lactones



UnitedStates Patent m 3,503,994

Patented Mar. 31, 1970 3 503 994 the production of iodo substituted F.E.S. compoundssuch r as described in US. Patent 3,239,349 which have anti- E d dB g g fi ig g gfi ggfi 1 Well bacterial activity, since the chloromercuri group is rer rizi ster I Te re ilaute Iild. as signors to Commercial place'flble by iodine, -g', in form Solution. Also the Solvent s Corporation, a coi'poration of Maryland arsenlc P Of this nventlon have antibacterial No Drawing. Filed June 29, 1966, Ser. No. 561,394 and antifungal actlvity.

Int. Cl. C07d 9/00 It can be desirable to protect the hydroxyl groups on US. 'Cl. 260-343.2 Claims the benzene ring of F.E.S. against undesirable side reactions before mercuration or arsonation which is accom- 10 plished by converting the hydroxyl groups to ethers, e.g.,

ABSTRACT O THE DISCLOSURE methyl ethers, as described in US. Patent 3,239,342 and O CH subsequently removing the masking group to regenerate R-O H: 3 the hydroxyl group. The hydroxyl group can be re- -0 generated from, for example, a methyl ether by hydroly- X 15 sis or by refluxing in acetic acid solution with hydro- B bromic acid. Aluminum chloride is another efl ective de- R-O A (011/) alkylating agent. Other masking groups include benzyl and compounds where R is benzyl are described in copending application Ser. No. 532,113, now abandoned. where R is selected from the group consisting of hydro- Dlhydro compounds Where A 15 2- 2- gen, lower alkyl and benzyl; X is selected from the group descnPed 111 Patent 3,239,354- DCOXY consisting of hydrogen halomercuri and ASO(OH2), where 1B is OH and tetrahydro F.E.S. where B 18 with the proviso that not more than one X is hydrogen; H are desqlbed n US. Patents 3,239,341 and A is a radical selected from the group consisting of 3,239,345, TeSPeCtIVeIY- c and and B is a radical The following examples serve to illustrate the present selected from the group consisting of C=O, CHOH mventlonand CH with the proviso that A is CH -CH EXAMPLE I when B is 2- F.E.S. is reacted with mercuric acetate in alcoholic solution at an elevated temperature to produce 3,5-di- The present invention relates to new compounds d O acetoxymercuri F.E.S. and S-acetoxymercuri F.E.S. which 1 t ound nustrated the formula; are then reacted with sodium chloride in aqueous solumore pamcular y 0 Comp 1 y tron to produce 3,5-d1chloromercuri and S-chloromercuri F.E.S. R-O 0 E EXAMPLE II b-o-cE-(omu X Dihydro F.E.S., F.E.S., 2,4-d1rnethylether, deoxy F.E.S., B tetrahydro F.E.S. and 4-benzyl ether F.E.S. are reacted according to Example I at somewhat higher temperatures (CH2): to produce the corresponding chloromercuri derivatives.

X I EXAMPLE III F.E.S. is reacted according to Example I to produce Where A is or CH=CH-; R is hydrothe acetoxymercuri derivatives which are then added to gen, substituted or unsubstituted alkyl, e.g., lower alkyl an aqueous solution of sodium bromide to produce the such as methyl, ethyl, hexyl, etc. or aralkyl, e.g., benzyl; corresponding bromomercuri derivatives.

X is hydrogen, halomercuri-, e.g., chloro-, iodoor bro- EXAMPLE IV momercurior arsonic acid radicals, i.e., AsO(0H) i o with the proviso that not more than one X is hydrogen; RE-S. 1s heated with arsenic acid at 160 C-, 1n aqueand B is c=0, CHOH, or cH with the proviso 011s solutwn to p e: that A is CH -CH when E is CH The compounds of the present invention can be pro- H duced from the compound: /CO-J)H (CH2)3 0:0 ii I H-O /COCH(CH2): CH=CH CH2) A80 (0112) C: H O \OH=CH (CH2)a 6 The 2,4-dimethylether-3,5-bis(diazonium chloride) of PBS. is added to an aqueous solution of sodium arsenite in the presence of a catalytic amount of cuprous chloride hereinafter referred to as the fermentation cstrogenic subto produce:

stance (F.E.S.). Halomercuri derivatives are produced by reaction of, for example, mercuric acetate and F.E.S. and conversion of the resulting acetoxymercuri deriva- OCHa 0 CH3 tive to the halomercuri derivative by interaction with ll & sodium halide, e.g., sodium chloride. Alkali arsenites react with F.E.S. diazoniurn compounds, described in copending application S.N. 561,369 (l84-443A) filed concurrently herewith, now abandoned to produce arsonic 7 acid derivatives. The compounds of this invention have antibacterial utility and also serve as intermediates for 3,503,994 a 3 4 It is claimed: group consisting of -CH=CH- and --CH -CH 1. and B is C=O.

0 cm 2. The compound of claim 1 wherein at least one X H 0 4 CH is chloromercuriand R is hydrogen.

n 3. The compound of claim 1 wherein at least one X X- 5 B is chloromercurrand R 1s lower alkyl.

4. The compound of c1a1m 1 wherem R 1s lower alkyl.

R4) 5. The compound of claim 1 wherein R is hydrogen.

10 No references cited. where R is selected from the group consisting of hydrogen, lower alkyl and benzyl; X is selected from the group JAMES A. PATTEN, Primary Examiner consisting of hydrogen, chlorornercuriand bromomercuri-, with the proviso that not more than one X is US. Cl. X.R. hydrogen and when one X is hydrogen it is in the 3 posi- 15 260999 tion of the benzene ring; A is a radical selected from the 

